Honeywell International Inc.

Mississippi State Research and Technology Corporation

Ron S Ragland

Brad Alan Terlson

Leisha J Rotering

Russell A Straate

Timothy J Smith

Timothy J Kensok

Steven M Felber

A ventilation and dehumidification system for ventilating fresh air to a conditioned space. The system is comprised of a desiccant wheel for dehumidifying incoming air by exchanging moisture from an inflow current of air with an outflow current of air. The desiccant wheel is both regenerated and defrosted by a regenerative heater which is placed to heat the outflow current of air before the outflow current passes through the desiccant wheel. The system includes blowers in order to motivate the inflow and outflow currents of air. The system may also include heat recovery means such as a heat transfer wheel or a motionless heat transfer core. The blowers can be arranged so as to create an air pressure differential between the inflow chamber and the outflow chamber so that any leakage of air between the two chambers will occur from the inflow chamber to the outflow chamber.

Ventilating dehumidifying system

A ventilation system for ventilating fresh air to a conditioned space, the system capable of supplying substantially more air to the space than is removed by the system in order to prevent depressurization inside the space. Passing through the unit housing is an inflow chamber, an outflow chamber, and a make-up air duct. Two blowers, an intake blower and an exhaust blower, are placed within the inflow chamber and the outflow chamber in order to motivate inflow and outflow currents of air. A damper acts to open and close the make-up air duct. When the damper is in an open position and the intake blower operates at a higher speed than the exhaust blower the system increases the air pressure within the conditioned space. A heat transfer wheel is disposed within both the inflow chamber and the outflow chamber to exchange heat between the two currents of air. A pre-heater is placed in the make-up air duct to be used in cold weather conditions to heat the air which bypasses the heat recovery wheel. The system can also include a desiccant wheel and regenerative heater in order to provide the function of dehumidification.

Heat recovery ventilator with make-up air capability

Growing community of inventors

Minneapolis, MN, United States of America

Ron S Ragland